experience

For one night only, 2 lucky people will get to spend Halloween night 65 feet beneath the city of Paris in the world's largest grave - the world-famous Catacombs. The experience of a lifetime comes from Airbnb, a San Francisco-based website for people to list, find, and rent lodging...

This is definitely an experience.  Maybe you know someone who is dealing with Schizophrenia, this gives you a glimpse of what it is like.